Efficacy of Various Larvicides against Aedes aegypti Immatures in the Laboratory

Japanese Journal of Infectious Diseases

Si-Jia Lee¹  Jhy-Wen Wu²  Chih-Yuan Wang¹  Ho-Sheng Wu¹  Cheo Lin¹  Hwa-Jen Teng¹ 

[1] Research and Diagnostic Center, Centers for Disease Control;2nd Division, Centers for Disease Control

关键词: larvicides;    Aedes aegypti;    laboratory;   

DOI  :  10.7883/yoken.66.341

学科分类：传染病学

来源: National Institute of Infectious Diseases

【 摘 要 】

References(13)Cited-By(2)We conducted a laboratory study to evaluate the efficacy of control agents against small larvae, large larvae, and pupae of Aedes aegypti to determine an appropriate larvicide regime to employ in emergency dengue control programs. The control agents included Bacillus thuringiensis var. israelensis (Bti), pyriproxyfen (an insect growth regulator), a larvicidal oil, Aquatain AMF (polydimethylsiloxane, a monomolecular film), and temephos at the recommend application dosages and rates. Our results showed that Bti, pyriproxyfen, and temephos were efficacious (100% mortality) against larvae, irrespective of the instar stage, but not against pupae of Ae. aegypti (1.5–7.8% mortality). Aquatain AMF, on the other hand, was very effective at controlling the pupal stage (100% mortality), but had limited efficacy against small larvae (38.0% mortality) and large larvae (78.0% mortality). The larvicidal oil was effective against all immature stages (93.3–100% mortality). Therefore, we concluded that for effectively interrupting the dengue transmission cycle, larvicides that kill the pupal stage (Aquatain AMF or larvicidal oil) should be included in an emergency dengue control program in addition to Bti, pyriproxyfen, or temephos.

【 授权许可】

Unknown